- immediately, instantly, straightaway, straight off, directly, now, right away, at once, forthwith, in real time, like a shot - without delay or hesitation; with no time intervening; "he answered immediately"; "found an answer straightaway"; "an official accused of dishonesty should be suspended forthwith"; "Come here now!"
- at a time, at once, at one time - simultaneously; "he took three cookies at a time"